Trafag,8773,SF6氣體密度繼電器,SF6氣體密度變送器,SF6氣體密度控制器
Trafag,8773,SF6氣體密度繼電器,SF6氣體密度變送器,SF6氣體密度控制器
主要特點(diǎn):
測(cè)量原理:石英晶振測(cè)量
測(cè)量范圍:0...60 kg SF6 /m3 10 ... 253 Hz
輸出:數(shù)字信號(hào)或脈沖電流
可連續(xù)測(cè)量溫度和密度
密度精度等級(jí):1.0
溫度精度等級(jí):正常溫度±2°C -40...85°C: ±3°C
電源電壓:15 (10...20) VDC
環(huán)境條件 工作溫度：-40...+70°C
介質(zhì)溫度：-40 ...+70°C
存儲(chǔ)溫度：-40 ...+85°C
工作壓力:20BAR
Trafag,8773,SF6氣體密度繼電器,SF6氣體密度變送器,SF6氣體密度控制器
主要特色
長(zhǎng)期使用輸出信號(hào)無(wú)漂移
防護(hù)等級(jí)IP65
無(wú)需維護(hù)
高抗振性和防沖擊性
緊湊型設(shè)計(jì)
適合于戶外使用
隨壓力變化響應(yīng)時(shí)間<10ms
Application
High voltage technology
Main characteristics
SF6 Density Sensor
? Principle: Oscillating quarz measurement
? Measuring range: 0...60 kg SF6 /m3
10 ... 253 Hz
? Output
Digital: current pulses onto supply current
? Accuracy: ±1% of measured value and ±1% of range
The gas density sensor Trafag 8773 has been specially designed for surveying insulation gases.
The gas density is measured with an oscillating quarz with excellent long term stability. A second quarz in vacuum is used to compensate for a
possible temperature error. The output signal is a pulse train modulated onto the supply current.
The measured density is propotional to the pulse frequency.
Additionally the temperature can be measured over the pulse b of the frequency signal.
Main features
? Continuous measurement of density and temperature
? long term drift free output signal
? Protection IP65
? No maintenance
? Compact
? Vibration and shock proof
? Suitable for outdoor usage
? Response time <10ms (with pressure changes)
Ordering inbation
Specifications
Main characteristics
Principle: Oscillating quarz measurement
Measuring range: 0...60 kg SF6 /m3
10 ... 253 Hz
Output
Digital: current pulses onto supply current
Accuracy
Accuracy: ±1% of measured value and ±1% of range
Repeatability: ±0.2% of measured value
Temperature signal
at ambient temperature ±2°C
at -40...85°C: ±3°C
Electrical data
Output signal
Digital: current pulses
Density signal: pulse frequency
10...253 Hz (range
0...51.22kg SF6/m3)
Supply voltage: 15 (10...20) VDC
Ground: at gas connection of sensor
Reb time: <10 ms (with pressure changes)
Temperature signal: Pulse b 2188 ... 2565 ... 2975ms
(=Temp. -40...23...85°C)
Environmental conditions
Operating temperature: -40... +70°C
Media temperature: -40... +70°C
Storage temp.: -40... +85°C
Operating pressure: 20 bar
Humidity: suitable for outdoor usage;
55°C and 98% relative
Protection: IP65
Vibration: 15 g (max. 6 mm),
(5...2000 Hz)
Chock: 100g/ 6 ms
EMC Protection
Emission: EN /IEC 61000-4-4
Immunity: EN /IEC 61000-4-5
Mechanical data
Material
Housing: AlMgSi1
Electr. connection: Cable with connecteur
Montage: any b
Weight: approx. 200...400 g
Functional diagram
Output Signal
Dimensions
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